Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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CNC Tool Path Planning for Free-Form Sculptured Surface with a New Tool Path Interval Algorithm

새로운 공구경로간격 알고리듬을 이용한 자유곡면에서의 CNC 공구경로 계획

  • Lee, Sung-Gun (Dept.of Mechanical Engineering, Graduate School of Kyungpook National University) ;
  • Yang, Seung-Han (Dept.of Mechanical Engineering, Kyungpook National University)
  • 이성근 (경북대학교 대학원 기계공학과) ;
  • 양승한 (경북대학교 기계공학부)
  • Published : 2001.06.01
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Abstract

A reduced machining time and increased accuracy for the sculptured surface are very important when producing complicated parts. The step-size and tool-path interval are essential components in high speed and high resolution machining. If they are small, the machining time will increase, whereas if they are large, rough surfaces will be caused. In particular, the machining time, which is key in high speed machining, is affected by the tool-path interval more than the step-size. The conventional method for calculating the tool=path interval is to select a small parametric increment of a small increment based on the curvature of the surface. However, this approach also has limitations. The first is that the tool-path interval can not be calculated precisely. The second is that a separate tool-path interval needs to be calculated in each of the three cases. The third is that the conversion from Cartesian domain to parametric domain or vice versa must be necessary. Accordingly, the current study proposes a new tool-path interval algorithm that do not involve a curvature and that is not necessary for any conversion and a variable step-size algorithm for NURBS.

Keywords

References

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